680878 has 8 divisors (see below), whose sum is σ = 1114200. Its totient is φ = 309480.

The previous prime is 680873. The next prime is 680879. The reversal of 680878 is 878086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15453 + ... + 15496.

It is an arithmetic number, because the mean of its divisors is an integer number (139275).

2⁶⁸⁰⁸⁷⁸ is an apocalyptic number.

680878 is a deficient number, since it is larger than the sum of its proper divisors (433322).

680878 is a wasteful number, since it uses less digits than its factorization.

680878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30962.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 680878 is about 825.1533190868. The cubic root of 680878 is about 87.9744243858.

It can be divided in two parts, 6808 and 78, that added together give a palindrome (6886).

The spelling of 680878 in words is "six hundred eighty thousand, eight hundred seventy-eight".